CN203467044U - LED driving power supply equipped with fluorescent-lamp emergency power source - Google Patents
LED driving power supply equipped with fluorescent-lamp emergency power source Download PDFInfo
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- CN203467044U CN203467044U CN201320616099.9U CN201320616099U CN203467044U CN 203467044 U CN203467044 U CN 203467044U CN 201320616099 U CN201320616099 U CN 201320616099U CN 203467044 U CN203467044 U CN 203467044U
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- power
- power supply
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- control circuit
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The utility model discloses an LED driving power supply equipped with a fluorescent-lamp emergency power source and belongs to the technical field of an LED lighting driving power supply. The LED driving power supply equipped with the fluorescent-lamp emergency power source includes an input rectifying filtering circuit, an N-channel MOS field-effect transistor, a control circuit, a power inductor, a power switch and an output rectifying filtering circuit. The input rectifying filtering circuit is connected with the power inductor. The power inductor is connected with the output rectifying filtering circuit and the power switch at the same time and the other end of the power switch is connected with the control circuit. A terminal pin of an IC included by the control circuit is connected with the N-channel MOS field-effect transistor. The LED driving power supply equipped with the fluorescent-lamp emergency power source is simple in circuit so that forming and manufacturing process is simple, production efficiency is improved, manufacturing cost is reduced and the power supply has two work modes at the same time: connection and disconnection with a mains supply.
Description
Technical field
The utility model relates to LED illumination driving power source technical field, particularly a kind of LED driving power that is equipped with fluorescent lamp emergency power supply.
Background technology
Along with LED technology is increasingly mature with application in the fast development of every field, the pith that LED driving power can luminescence display as LED is also subject to technical staff's attention, and its technology obtains fast development.Because LED is usingd DC power supply as driving, so LED power supply is also used by every field mainly with switch DC voltage source.
At present LED light fixture because of its light efficiency higher by 100% than existing fluorescent lamp, for adapting to national energy-saving requirement, that more and more comes applies, for present fire-fighting emergency power supply, being equipped with fluorescent lamp is also being widely used, in order to reach the object that adopts LED light fixture to replace fluorescent lamp, some LED driving powers that are equipped with fluorescent lamp emergency power supply all need the battery of vast capacity to reach the time required while meeting an urgent need, and have so greatly increased volume; Also dispose on the other hand ballast, improved again cost.
Summary of the invention
In order to solve above-mentioned existing technical deficiency and defect, the purpose of this utility model is to provide a kind of circuit to be equipped with simply, cheaply the LED driving power of fluorescent lamp emergency power supply.
The purpose of this utility model is achieved by the following technical solution:
A LED driving power that is equipped with fluorescent lamp emergency power supply, is characterized in that: described LED driving power mainly comprises input rectifying filter circuit, three resistance, N-channel MOS field effect transistor, control circuit, power inductance, power switch and output rectifier and filters;
Described input rectifying filter circuit is electrically connected to power inductance, and described power inductance is also electrically connected to power switch, output rectifier and filter simultaneously;
The described power switch other end is electrically connected to one end pin of control circuit, the source electrode of one end of described control circuit and described N-channel MOS field effect transistor;
The grid of described N-channel MOS field effect transistor is electrically connected to first and second resistance, and its drain electrode is electrically connected to the 3rd resistance;
Described the first resistance and described the 3rd resistance are connected between described input rectifying filter circuit and described power inductance simultaneously;
The described second resistance other end is electrically connected to the source electrode of described N-channel MOS field effect transistor.
As the optional technical scheme of the utility model, described control circuit comprises an IC, and described IC can adopt SMD802.
In sum, the LED driving power of outfit fluorescent lamp emergency power supply provided by the utility model, the beneficial effect having:
1, there are two Zhang Gong's operation modes: a kind of is the normal mode of operation of connecting civil power, and another kind is the contingency mode breaking after civil power.
When 2, LED light fixture replaces fluorescent lamp, without ballast is installed, saved cost.
3, thereby the simple formation of circuit production technology is simple, has improved production efficiency, has reduced production cost.
Accompanying drawing explanation
Accompanying drawing 1 is for being equipped with the structural representation of the LED driving power of fluorescent lamp emergency power supply.
Description of reference numerals: R1: the first resistance, R2: the second resistance, R3: the 3rd resistance, Q1:N channel MOS field effect transistor.
Embodiment
Below by embodiment also by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.Followingly with reference to accompanying drawing, the explanation of execution mode of the present utility model is intended to present general inventive concept of the present utility model to make an explanation, and does not should be understood to a kind of restriction of the present utility model.
Shown in accompanying drawing, the utility model provides a kind of LED driving power that is equipped with fluorescent lamp emergency power supply, mainly comprises mains electricity input end, input rectifying filter circuit, the first resistance (R1), the second resistance (R2), the 3rd resistance (R3), N-channel MOS field effect transistor (Q1), control circuit, power inductance, power switch, output rectifier and filter and DC output end.
Shown in accompanying drawing, mains electricity input end is connected with input rectifying filter circuit, input rectifying filter circuit connects power inductance, power inductance is connected with output rectifier and filter, power switch simultaneously, power switch one end connects control circuit, and control circuit is also connected with the source electrode of N-channel MOS field effect transistor (Q1); The grid of N-channel MOS field effect transistor (Q1) is connected with the first resistance (R1), the second resistance (R2), its drain electrode connects one end of the 3rd resistance (R3), the other end of the first resistance (R1) other end and the 3rd resistance (R3) is connected between input rectifying filter circuit and power inductance simultaneously, and the other end of the second resistance (R2) connects the source electrode of N-channel MOS field effect transistor (Q1).
When LED driving power is when connecting the normal mode of operation of civil power, fluorescent lamp emergency power supply is in charged state; Because there is relay the inside of fluorescent lamp emergency power supply, when connecting civil power, fluorescent lamp emergency power supply internal control relay directly allows civil power pass into LED driving power, now civil power becomes direct current after input rectifying filter circuit, direct current is through the sampling dividing potential drop of the first resistance (R1), the second resistance (R2), control the conducting of N-channel MOS field effect transistor (Q1), obtain an electric current through the included IC of current limliting arrival control circuit of the 3rd resistance (R3), as SMD802, make it in controlling operating state; Now, control circuit provides a pwm signal power ratio control switch, and by the conducting of power switch and energy storage and the exoergic of cut-off power ratio control inductance, now direct current becomes square wave, thereby through the output of output rectifier and filter direct current, obtain the needed electric current and voltage of LED light fixture again.
When the contingency mode of LED driving power after the civil power that breaks: fluorescent lamp emergency power supply is in emergency rating, now battery converts a high frequency voltage to through fluorescent lamp emergency power supply and is input on LED driving power.Now fluorescent lamp emergency power supply is equivalent to the limit power power-supply of a high frequency, high-frequency electrical becomes direct current after input rectifying filter circuit, then control circuit can hocket under two kinds of operating states, i.e. control circuit normal operating conditions and control circuit off position.When control circuit normal operating conditions: direct current is through the sampling dividing potential drop of the first resistance (R1), the second resistance (R2), control the conducting of N-channel MOS field effect transistor (Q1), obtain an electric current through the included IC of current limliting arrival control circuit of the 3rd resistance (R3), as SMD802, make it in controlling operating state, control circuit provides a pwm signal power ratio control switch, by the conducting of power switch and energy storage and the exoergic of cut-off power ratio control inductance, when control circuit off position: because fluorescent lamp emergency power supply is equivalent to the limit power power-supply of a high frequency, under control circuit normal operating conditions, required power is greater than the maximum power that fluorescent lamp emergency power supply provides, caused the direct voltage after input rectifying filter circuit to reduce, so through the first resistance (R1), the voltage of the sampling dividing potential drop gained of the second resistance (R2) does not reach the voltage of driving N channel MOS field effect transistor (Q1), finally cause IC(as SMD802) do not work, cannot provide pwm signal to carry out driving power switch, so input rectifying filter circuit is in a kind of off-state, now emergency LED driving power is equivalent to there is no power output, fluorescent lamp emergency power supply continues to provide electric energy to come simultaneously, cause the voltage of input rectifying filter circuit to rise, thereby the branch pressure voltage of the first resistance (R1) the second resistance (R2) reaches the voltage of driving N channel MOS field effect transistor (Q1), this has got back to again control circuit normal operating conditions.Above-mentioned two operating states are equivalent to a large PWM and regulate, and the PWM that adds control circuit regulates, and are equivalent to two PWM and regulate.The filtered direct current of input rectifying regulates the square wave having obtained through two PWM, then after output rectifier and filter, obtains electric current and voltage when emergent.The power output of the emergency LED driving power under the contingency mode breaking after civil power is much smaller than the power of connecting the normal mode of operation of civil power.
The above embodiment has only expressed preferred implementation of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims and embodiment.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.
Claims (2)
1. a LED driving power that is equipped with fluorescent lamp emergency power supply, is characterized in that:
Described LED driving power mainly comprises input rectifying filter circuit, three resistance, N-channel MOS field effect transistor, control circuit, power inductance, power switch and output rectifier and filters;
Described input rectifying filter circuit is electrically connected to power inductance, and described power inductance is also electrically connected to power switch, output rectifier and filter simultaneously;
The described power switch other end is electrically connected to one end pin of control circuit, the source electrode of one end of described control circuit and described N-channel MOS field effect transistor;
The grid of described N-channel MOS field effect transistor is electrically connected to first and second resistance, and its drain electrode is electrically connected to the 3rd resistance;
Described the first resistance and described the 3rd resistance are also connected between described input rectifying filter circuit and described power inductance;
The described second resistance other end is electrically connected to the source electrode of described N-channel MOS field effect transistor.
2. according to claim 1, the LED driving power of described outfit fluorescent lamp emergency power supply, is characterized in that: described control circuit comprises an IC, described IC can adopt SMD802.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320616099.9U CN203467044U (en) | 2013-10-08 | 2013-10-08 | LED driving power supply equipped with fluorescent-lamp emergency power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320616099.9U CN203467044U (en) | 2013-10-08 | 2013-10-08 | LED driving power supply equipped with fluorescent-lamp emergency power source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203467044U true CN203467044U (en) | 2014-03-05 |
Family
ID=50179379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320616099.9U Expired - Fee Related CN203467044U (en) | 2013-10-08 | 2013-10-08 | LED driving power supply equipped with fluorescent-lamp emergency power source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203467044U (en) |
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2013
- 2013-10-08 CN CN201320616099.9U patent/CN203467044U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140305 Termination date: 20161008 |